Its design is the same as installing magazine on the last part, it could make barrel longer but it won't cause the gun body too long and to inflexible. And it is like real gun, the bullets shell backing is on the bottom of the gun, and the traditional's usually is on the right side of the gun. P90's design is for lefted or righted hand people to use.
* High capacity silencer. * Triple mounted rails allow for installing option parts. * Double nut system fixes silencer tightly.
* Comes with Compensator as standard, alternative to silencer. * Urban gray camouflage design. * One-touch release of Upper receiver from main frame.* Super real magazine including the dummy cartridge. * Butt plate with falling-proof lock. * The latest "New Version 6 gearbox" built in.* EG 1000 High-torque motor. * Hi capacity "variable Hop-up system".